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Annular Control Safety Valves

Incorporating a tubing-retrievable safety valve and a mudline packer to provide control of the annulus fluid

Schlumberger provides annular control systems for ESP, gas lift injection, gas and water injection, and dual-zone applications to control annular flow. These surface-controlled subsurface safety valves are designed for medium-pressure, sweet to corrosive environments and feature rod piston actuation, elastomeric seals, and both flapper and sleeve closure systems.

Operational safety and flexibility

The valves control injection and produced well fluids to minimize
the loss of produced fluids and reduce the danger resulting from loss
of injection gas or well fluids. By isolating the tubing flow from the
annular flow, the valves provide a high degree of well
protection and facilitate dual-zone production with both annular and
tubing flow. They also provide an annular path for
injection gas.

The large, straight-through bore design
facilitates slickline operations and reduces obstructions that could
decrease pressure. The valves can be adapted for use
with most large-bore packers, retrievable or permanent.